BARREL LOCKING LUG..........

[GlennRasch]

I was just wondering why someone would tapper one of the locking lugs like this I've never seen this..it has about .006 thousands end play..? This is a 5in. 40 with a bull barrel with about 3000 rounds.....

Edited March 27, 2013 by GlennRasch

[OperationHitFactor]

That is a product of a bad barrel fit. The hood is compacted pretty bad, I've seen this on factory guns. Option one, the taper was formed during fit. Option 2 an inexperienced gunsmith attempted to fix it. Option 3 a 5 year old fit the barrel and it formed from use. I'm surprised the slide didn't crack, what does the slide look like?

I'd recommend a new slide and barrel. Fitting a new barrel will do the trick, but the slide might be wasted. You can do a cheap fix and refit the barrel, but know the slide might give out and the barrel might be too far gone.

[Service Desk]

It looks like the link down clearance is (or was) too small. Looks toasted to me, you should check the slide for damage and expect to find it.

[adolphuscusins]

I can't tell from the picture. Is there some deformation on the two rearmost lugs?

[benny hill]

It was beveled to get the barrel to lock up higher as the front lug edge hits first. Since it has no bearing pressure on it under recoil, no foul, no harm.